First of all, Alexa 65 is currently not for sale, you can rent for $10K a day from ArriRental. No doubt, the images captured by three vertically stiched Alexa sensors are stellar. There's nothing wrong with post-MX sensors by RED in terms of color science and dynamic range. The main problem of Dragon with STH OLPF is higher noise levels than LLO, even though the texture of it is improved if DEB feature is enabled, it's still a little grainy if underexposed, though. On the other hand, ARRI puts out a solid product from top to bottom, no bullshit. Well, except for all that "cinematic 4K" uprezzed from a good ole 3K Alev3 sensor. Now that's a fat sreaming pile.